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Free guide · Seasonal

The South Dakotawinter checklist

Battery load, coolant strength, tire depth, wiper condition, and the kit worth riding along from Thanksgiving to Easter. Twenty below does not negotiate.

4 checks · One trunk kit · Free to print and keep

The four before the first hard freeze

Twenty below does not negotiate, and the vehicles that struggle in January usually announced it in October. These are the four checks that decide whether winter is an inconvenience or an emergency, in the order they strand people.

1. Battery, load tested rather than eyeballed

Cold cuts a battery's strength roughly in half right when the engine needs the most. A battery past three years old deserves a proper load test against its rating, because the voltage can look fine right up until the first single digit morning. The test takes minutes.

2. Coolant, at the strength the label claims

Coolant protects to a temperature only when it is mixed at the right strength, and years of topping off with water quietly thin it out. The strength gets measured, and while it is being checked, so does the heater, because low coolant is the most common reason a cab heats slowly in January.

3. Tires, tread and pressure both

Winter grip lives in the tread depth, and pressure drops about one pound for every ten degrees the temperature falls, so the tires that were fine in September are low by Thanksgiving. If you run dedicated winter tires, the swap is worth booking before the first storm rather than after it.

4. Wipers and washer fluid rated for the cold

Summer washer fluid freezes in the lines, and a smeared windshield at dusk on a gravel shoulder is a genuinely dangerous place to discover it. New blades and winter rated fluid are the cheapest safety upgrade on this page.

The glovebox and the trunk

Worth carrying from Thanksgiving to Easter, and checking once when you print this:

From the counterIf the vehicle struggles to start on the first genuinely cold morning, take it as the warning it is. The morning it finally stays silent is usually colder, darker, and further from home.
Doing one of these right now?

Call (605) 339-9717 and describe it in your own words. A minute on the phone usually finds the next step, and most estimates go out the same business day.

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